George W. Bush rises ahead of the dawn most days, when the loudest sound outside the White House is the dull, distant roar of F-16s patrolling the skies. Even before he brings his wife, Laura, a morning cup of coffee, he goes off to a quiet place to read alone.

His text isn’t news summaries or the overnight intelligence dispatches. Those are for later, downstairs, in the Oval Office. It’s not recreational reading (recently, a biography of Sandy Koufax). Instead, he’s told friends, it’s a book of evangelical mini-sermons, “My Utmost for His Highest.” The author is Oswald Chambers, and, under the circumstances, the historical echoes are loud. A Scotsman and itinerant Baptist preacher, Chambers died in November 1917 as he was bringing the Gospel to Australian and New Zealand soldiers massed in Egypt. By Christmas they had helped to wrest Palestine from the Turks, and captured Jerusalem for the British Empire at the end of World War I.